CN109921592B - Mixed excitation motor rotor structure suitable for modular production - Google Patents
Mixed excitation motor rotor structure suitable for modular production Download PDFInfo
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- CN109921592B CN109921592B CN201910241465.9A CN201910241465A CN109921592B CN 109921592 B CN109921592 B CN 109921592B CN 201910241465 A CN201910241465 A CN 201910241465A CN 109921592 B CN109921592 B CN 109921592B
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Abstract
The invention discloses a mixed excitation motor rotor structure suitable for modular production, which comprises a motor rotor, wherein the motor rotor comprises a rotor yoke and a magnetic pole structure (the structure is the teeth of the motor rotor) arranged on the rotor yoke. The advantages are that: the invention adopts a hybrid excitation system, effectively increases the power density of the motor and reduces the volume of the motor on the premise of ensuring adjustable excitation, and also adopts a salient pole type structure to form a ventilation slot, thereby being beneficial to the heat dissipation in the motor; the length of the non-magnetic conducting material of the electric excitation magnetic pole can be adjusted, and the effect of changing the inductance of the motor is achieved.
Description
Technical Field
The invention relates to a hybrid excitation motor rotor structure suitable for modular production, and belongs to the technical field of motors.
Background
With the increasingly wide application of permanent magnet motors in various industrial fields, the requirements on the magnetic field regulation capacity and control of the permanent magnet motors are higher and higher. The hybrid excitation motor can effectively adjust the magnetic field in the motor, achieves the effects of magnetization and demagnetization, and brings beneficial effects to the operation and control of the motor. In recent years, dozens of structures of hybrid excitation motors are proposed or researched, but some of the motors have the structure that electric excitation and permanent magnet excitation are not mutually independent, and some of the motors are mutually independent, but are not beneficial to modular production, and the ventilation capacity of a rotor is not ideal.
Disclosure of Invention
In order to solve the technical problem, the invention provides a hybrid excitation motor rotor structure suitable for modular production, which comprises a motor rotor, wherein the motor rotor comprises a rotor yoke (8) and a magnetic pole structure (the structure is the teeth of the motor rotor) arranged on the rotor yoke, and is characterized in that the magnetic pole structure adopts a hybrid excitation structure and comprises a plurality of permanent magnetic excitation magnetic poles and electric excitation magnetic poles, the permanent magnetic excitation magnetic poles comprise permanent magnetic excitation magnetic pole iron yokes (2) and permanent magnets (3) arranged in the permanent magnetic excitation magnetic pole iron yokes, the electric excitation magnetic poles comprise electric excitation magnetic pole iron yokes (4), excitation coils (5) and non-magnetic conductive materials (6) arranged in the electric excitation magnetic pole iron yokes, and the excitation coils (5) are arranged at the periphery of the electric excitation magnetic pole iron yokes (4).
Furthermore, the number of the permanent magnet excitation magnetic poles is the same as that of the electric excitation magnetic poles, and the permanent magnet excitation magnetic poles and the electric excitation magnetic poles are installed on the rotor yoke at intervals.
Furthermore, the permanent magnetic excitation magnetic pole and the electric excitation magnetic pole both adopt salient pole type structures.
Furthermore, a ventilation groove (9) is arranged between the permanent magnet excitation magnetic pole and the electric excitation magnetic pole.
Furthermore, the excitation coil (5) is wound on the rotor pole body (7).
Further, the permanent magnet (3) is a neodymium iron boron permanent magnet with high magnetic energy product.
Furthermore, a non-magnetic conductive material (6) for adjusting the quadrature-direct axis inductance is arranged in the electrically excited rotor magnetic pole.
The invention achieves the following beneficial effects:
the hybrid excitation system is adopted, so that the power density of the motor is effectively increased and the volume of the motor is reduced on the premise of ensuring adjustable excitation; the non-magnetic material is arranged in the electric excitation magnetic pole, and the direct-axis reactance and quadrature-axis reactance of the motor can be changed due to the fact that the non-magnetic material is different in length along the radial direction, and therefore the performance of the motor is improved.
Drawings
Fig. 1 is a schematic view of a rotor structure of a hybrid excitation motor suitable for modular production according to the present invention.
The symbols in the figures are represented as: 1 stator yoke, 2 permanent magnet excitation magnetic pole iron yokes, 3 permanent magnets, 4 electric excitation magnetic pole iron yokes, 5 excitation coils, 6 non-magnetic materials, 7 rotor pole bodies, 8 rotor yokes and 9 ventilation grooves.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a hybrid excitation motor rotor structure suitable for modular production includes a motor rotor for operating in matching with a stator yoke 1, where the motor rotor includes a rotor yoke 8 and a magnetic pole structure (the structure is a tooth of the motor rotor) provided on the rotor yoke, and is characterized in that the magnetic pole structure adopts a hybrid excitation structure including a plurality of permanent magnetic excitation magnetic poles and electric excitation magnetic poles, where the permanent magnetic excitation magnetic poles include a permanent magnetic excitation magnetic pole yoke 2 and a permanent magnet 3 therein, and the permanent magnet 3 is embedded in the permanent magnetic excitation magnetic pole yoke 2 for providing permanent magnetic excitation, and can effectively reduce the volume of the motor and increase the power density thereof; the electric excitation magnetic pole comprises an electric excitation magnetic pole iron yoke 4, an excitation coil 5 and a non-magnetic conductive material 6 in the electric excitation magnetic pole iron yoke, wherein the excitation coil 5 is arranged on the periphery of the electric excitation magnetic pole iron yoke 4. The permanent magnetic excitation magnetic pole and the electric excitation magnetic pole are mutually independent in structure, and the performance influence of electric excitation on the permanent magnet can be reduced. On the premise of ensuring adjustable magnetism, the power density of the motor is increased by adopting permanent magnet excitation, and the volume is effectively reduced.
In this embodiment, the number of the permanent magnet excitation magnetic poles is the same as that of the electric excitation magnetic poles, and the permanent magnet excitation magnetic poles and the electric excitation magnetic poles are installed on the rotor yoke at intervals, that is, one electric excitation magnetic pole is arranged between every two permanent magnet excitation magnetic poles.
In this embodiment, the permanent magnet excitation magnetic pole and the electric excitation magnetic pole both adopt a salient pole type structure, so that the air circulation area inside the motor can be increased, the heat dissipation effect is enhanced, and the ventilation groove 9 is formed between the permanent magnet excitation magnetic pole and the electric excitation magnetic pole, so that the heat dissipation and ventilation are facilitated.
In this embodiment, the magnetic pole iron yokes of the permanent magnetic excitation magnetic pole and the electric excitation magnetic pole are connected with the rotor yoke 8 through the rotor pole body 7, and the excitation coil 5 is wound on the rotor pole body 7 of the electric excitation magnetic pole iron yoke 4 and used for providing electric excitation.
In this embodiment, the permanent magnet 3 is a neodymium iron boron permanent magnet with high magnetic energy product, so that the excitation magnetic field of the motor is enhanced, and the volume of the motor can be reduced under the same power.
In this embodiment, a non-magnetic conductive material 6 for adjusting the quadrature-direct axis inductance is provided inside the electrically excited magnetic pole.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A mixed excitation motor rotor structure suitable for modular production comprises a motor rotor, wherein the motor rotor comprises a rotor yoke (8) and a magnetic pole structure arranged on the rotor yoke, and is characterized in that the magnetic pole structure adopts a mixed excitation structure and comprises a plurality of permanent magnetic excitation magnetic poles and electric excitation magnetic poles, each permanent magnetic excitation magnetic pole comprises a permanent magnetic excitation magnetic pole iron yoke (2) and a permanent magnet (3) therein, each electric excitation magnetic pole comprises an electric excitation magnetic pole iron yoke (4), an excitation coil (5) and a non-magnetic conducting material (6) in the electric excitation magnetic pole iron yoke, and the excitation coil (5) is arranged on the periphery of the electric excitation magnetic pole iron yoke (4); a non-magnetic-conductive material (6) for adjusting the quadrature-direct axis inductance is arranged in the electric excitation magnetic pole, and the direct axis reactance and the quadrature axis reactance of the motor are changed by changing the length of the non-magnetic-conductive material (6) in the radial direction; the permanent magnetic excitation magnetic pole and the electric excitation magnetic pole both adopt salient pole type structures; and a ventilation groove (9) is arranged between the permanent magnetic excitation magnetic pole and the electric excitation magnetic pole.
2. The rotor structure of a hybrid excitation motor suitable for modular production according to claim 1, wherein the number of the permanent magnet excitation magnetic poles and the number of the electric excitation magnetic poles are the same, and the permanent magnet excitation magnetic poles and the electric excitation magnetic poles are installed on the rotor yoke at intervals.
3. The rotor structure of a hybrid excitation motor adapted for modular production according to claim 1, wherein the excitation coil (5) is wound around the rotor pole body (7).
4. The rotor structure of a hybrid excitation motor suitable for modular production according to claim 1, wherein the permanent magnet (3) is a neodymium iron boron high magnetic energy product permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910241465.9A CN109921592B (en) | 2019-03-28 | 2019-03-28 | Mixed excitation motor rotor structure suitable for modular production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910241465.9A CN109921592B (en) | 2019-03-28 | 2019-03-28 | Mixed excitation motor rotor structure suitable for modular production |
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| CN109921592A CN109921592A (en) | 2019-06-21 |
| CN109921592B true CN109921592B (en) | 2021-06-08 |
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| CN201910241465.9A Active CN109921592B (en) | 2019-03-28 | 2019-03-28 | Mixed excitation motor rotor structure suitable for modular production |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019132651A1 (en) * | 2019-12-02 | 2021-06-02 | Bayerische Motoren Werke Aktiengesellschaft | Electric hybrid synchronous machine with alternating electric and permanent magnetic rotor pole excitation and motor vehicle |
| CN111082625A (en) * | 2020-01-09 | 2020-04-28 | 东华大学 | Alternating magnetic pole brushless hybrid excitation synchronous motor |
| DE102020209583A1 (en) | 2020-07-30 | 2022-02-03 | Vitesco Technologies Germany Gmbh | Rotor for an electric drive device, electric drive device and method for controlling an electric drive device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662197A (en) * | 2009-09-17 | 2010-03-03 | 苏州工业园区美能新能源有限公司 | Compound excitation permanent magnet synchronous generator for electric vehicles |
| JP2010200482A (en) * | 2009-02-25 | 2010-09-09 | Denso Corp | Hybrid excitation ipm motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202068314U (en) * | 2011-04-08 | 2011-12-07 | 东南大学 | Modular complementary primary dual-feed double-convex-electrode linear motor and motor module group formed by same |
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2019
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010200482A (en) * | 2009-02-25 | 2010-09-09 | Denso Corp | Hybrid excitation ipm motor |
| CN101662197A (en) * | 2009-09-17 | 2010-03-03 | 苏州工业园区美能新能源有限公司 | Compound excitation permanent magnet synchronous generator for electric vehicles |
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